YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.92 | l | 58.96 | d | 53.89 | 35.95 | 29.94 | e | 44.69 | h | ||
1989 | 30.62 | j | ----- | z | 35.67 | d | 48.59 | c | 51.10 | g | 60.25 | h | 68.46 | q | 61.16 | l | 60.09 | n | 44.53 | n | 35.85 | q | 30.70 | p | 42.13 | j |
1990 | ----- | z | ----- | z | 42.00 | w | 48.41 | c | 50.53 | b | 56.37 | c | 67.20 | c | 66.25 | a | 64.98 | a | 44.52 | 38.11 | k | 23.83 | m | 56.89 | e | |
1991 | 27.50 | f | 39.31 | b | 34.83 | d | 43.82 | b | 48.82 | a | 52.45 | b | 64.20 | a | 67.20 | c | 59.70 | c | 45.33 | j | 35.20 | c | 34.10 | k | 49.50 | c |
1992 | 32.84 | c | 38.11 | a | 44.78 | b | 47.03 | a | 56.06 | f | 61.18 | e | 63.62 | e | 69.83 | j | 52.36 | h | 49.59 | n | 32.52 | i | 22.60 | j | 47.93 | f |
1993 | 24.13 | p | 26.80 | m | 36.76 | l | 43.35 | m | 60.27 | p | 55.65 | j | 56.82 | n | 60.86 | q | 56.47 | n | 49.07 | p | 31.97 | n | 31.06 | v | ----- | z |
1994 | 35.17 | p | 28.75 | 40.68 | 45.54 | f | 54.31 | d | 56.20 | c | 68.73 | 65.95 | 60.95 | h | 46.33 | g | 30.00 | d | 29.11 | 46.72 | d | |||||
1995 | 31.25 | e | 36.52 | c | ----- | z | 42.13 | c | 52.30 | d | 55.76 | k | 64.82 | q | 57.22 | h | 56.50 | b | 41.29 | e | 38.30 | b | 29.98 | f | 42.61 | e |
1996 | 23.96 | e | 27.78 | b | 36.22 | h | 45.50 | c | 46.84 | c | 57.65 | c | 64.71 | 62.68 | c | 52.57 | b | 43.80 | d | 31.31 | d | 24.37 | d | 43.74 | a | |
1997 | 27.23 | i | 31.31 | b | 37.81 | b | 43.16 | b | 53.48 | b | 57.02 | a | 67.40 | a | 68.02 | 56.59 | a | 44.60 | 39.39 | h | 30.91 | c | 49.03 | b | ||
1998 | 31.16 | b | 35.92 | b | 40.96 | d | 46.30 | c | 51.11 | d | 58.10 | d | 73.84 | c | 69.77 | a | 63.66 | b | 44.09 | d | 37.58 | e | 24.40 | f | 50.23 | a |
1999 | 32.25 | a | 32.58 | c | 37.50 | j | 42.85 | c | 48.15 | d | 56.11 | b | 65.45 | b | 66.72 | b | 54.25 | b | 45.20 | f | 41.86 | a | 30.87 | d | 47.11 | b |
2000 | 30.48 | e | 34.36 | a | 39.43 | b | 47.02 | b | 49.58 | a | 62.09 | b | 63.98 | a | 65.90 | a | ----- | z | ----- | z | ----- | z | ----- | z | 49.11 | d |
2001 | ----- | z | 31.18 | q | 39.79 | g | 38.71 | f | 50.59 | h | 53.76 | e | 63.58 | 67.23 | a | 61.11 | b | 45.20 | h | 41.41 | b | 29.86 | f | 57.42 | g | |
2002 | 28.19 | r | 31.67 | d | 32.12 | o | 43.91 | s | 49.59 | o | 58.50 | s | 72.90 | p | 63.52 | a | 57.94 | e | 43.12 | f | 37.90 | d | 34.14 | c | 45.03 | g |
2003 | 35.37 | a | 33.00 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.37 | k |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | 45.36 | x | ----- | z | ----- | z | ----- | z | ----- | z | 65.69 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.96 | p | 28.75 | i | ----- | z |
2007 | 28.68 | i | 34.57 | m | 37.68 | i | 42.58 | l | 53.20 | k | 55.06 | m | 71.97 | p | 65.69 | m | 58.63 | o | 47.54 | q | 40.73 | q | 29.27 | t | ----- | z |
2008 | 24.44 | m | ----- | z | 35.85 | r | 38.35 | t | 51.18 | l | 53.25 | n | 66.62 | o | 66.40 | p | 59.31 | n | 50.50 | p | 42.82 | s | 28.77 | t | ----- | z |
2009 | 27.50 | r | 34.86 | n | 32.19 | r | ----- | z | 52.42 | r | 60.58 | k | 65.87 | p | 67.50 | p | 64.46 | r | 41.29 | j | 38.56 | n | 24.47 | m | ----- | z |
2010 | 35.69 | o | 36.62 | o | 38.29 | x | ----- | z | ----- | z | ----- | z | 63.27 | r | 62.25 | u | 55.62 | i | ----- | z | 30.17 | x | 30.97 | l | ----- | z |
2011 | 25.42 | l | 25.19 | j | 35.18 | l | 36.21 | m | 45.71 | l | 53.55 | s | 61.72 | m | 64.69 | o | 60.81 | l | 44.92 | r | 34.03 | k | 28.46 | r | ----- | z |
2012 | 28.82 | l | 30.72 | k | 34.38 | g | 39.62 | q | 49.03 | b | 57.03 | o | 65.58 | 67.76 | f | ----- | z | 42.35 | n | 38.72 | a | 30.07 | j | 51.11 | i | |
2013 | 27.20 | d | 32.52 | 38.16 | 43.27 | 52.77 | 58.27 | 68.77 | a | 68.79 | 61.33 | 45.42 | a | 35.52 | 26.90 | 46.58 | ||||||||||
2014 | 30.87 | 25.77 | 37.66 | 44.12 | 54.18 | 57.22 | 69.52 | 69.97 | 62.02 | 51.84 | 34.52 | 32.61 | 47.52 | |||||||||||||
2015 | 32.97 | 38.34 | 42.84 | 44.93 | 56.69 | 65.70 | 70.77 | 70.69 | 57.17 | 54.53 | 34.95 | 30.35 | 50.00 | |||||||||||||
2016 | 31.40 | 37.90 | 40.31 | 51.33 | 54.21 | 59.28 | 64.31 | 67.61 | 57.17 | 47.82 | 42.90 | 23.10 | 48.11 | |||||||||||||
2017 | 23.30 | d | 30.48 | 37.84 | 43.45 | 53.03 | a | 58.67 | 70.76 | 70.77 | 60.72 | 45.11 | 36.66 | a | 25.69 | 46.37 | ||||||||||
2018 | 34.24 | 28.05 | 36.00 | 43.83 | 54.46 | q | 56.33 | 67.32 | 67.73 | 56.47 | 47.15 | 36.98 | 30.92 | 45.91 | a | |||||||||||
2019 | 31.73 | 21.88 | 33.15 | 44.75 | 54.63 | 58.03 | 63.55 | 67.42 | 56.67 | 40.58 | 37.28 | 33.05 | 45.23 | |||||||||||||
2020 | 32.89 | 33.31 | 36.82 | 43.78 | 51.69 | 56.00 | 63.63 | 67.95 | 61.73 | 47.08 | 37.02 | 33.03 | 47.08 | |||||||||||||
2021 | 32.24 | 27.21 | b | 38.55 | 45.65 | 52.65 | 64.32 | 73.22 | a | 68.44 | 59.40 | 47.87 | 39.45 | h | 27.15 | 48.79 | a | |||||||||
2022 | 29.50 | 30.71 | ----- | z | ----- | z | ----- | z | ----- | z | 67.88 | g | 70.81 | 63.05 | 50.17 | g | 28.88 | 22.82 | 40.96 | f | ||||||
2023 | ----- | z | 26.46 | o | 34.03 | 38.56 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.03 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.80 | 32.12 | 38.21 | 45.26 | 51.89 | 58.14 | 67.01 | 67.67 | 59.10 | 46.64 | 36.47 | 29.06 | 47.27 | |||||||||||||
S.D. | 3.25 | 4.71 | 3.09 | 2.36 | 2.63 | 3.29 | 3.30 | 2.20 | 3.24 | 4.12 | 3.67 | 3.64 | 1.51 | |||||||||||||
SKEW | -1.16 | -0.25 | 0.35 | 0.98 | -0.24 | 0.72 | 0.67 | -0.50 | -0.07 | 0.61 | -0.34 | -0.41 | 0.59 | |||||||||||||
MAX | 35.37 | 39.31 | 44.78 | 51.33 | 56.69 | 65.70 | 73.84 | 70.81 | 64.98 | 54.53 | 42.90 | 34.14 | 50.00 | |||||||||||||
MIN | 23.30 | 21.88 | 33.15 | 42.13 | 46.84 | 52.45 | 63.55 | 62.68 | 52.57 | 40.58 | 28.88 | 22.82 | 45.23 | |||||||||||||
YRS | 17 | 20 | 17 | 19 | 18 | 19 | 20 | 20 | 20 | 15 | 19 | 16 | 7 |